Molding machine



E. O. BEARDSLEY ET1AL HOLDING Mmmm:

Filed Deo. 4, 1922 EMMEN www l un il 2 Sheets-Sheet 1 Ami@ 2, 1925.

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MOLDING MACHINE Filed Das. 1;, 3,922

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Patented Apr. 21, 1925.

ELMER 0. BEARDSLEY AND WALTER F.

PATENT OFFICE..

PIPER. or CHICAGO, ILLINOIS, 'AssIGNoIis To THE BEARDSLEY & PIPER COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OIF ILLINOIS.

Application filed Becember 4, 1922. Serial No.'604,658.

To f/ZZ whom. t may concern.'

Be it known that we, ELMER 0. BEARDSLEY and WALTERF. PIPER, both of the city of Chicago, in the county of Cook and State of Illinois. United States of America, having invented certain new and useful Improvements in Molding Machines, do hereby declare that the following is a full, clear, and exact descriptionot' the same.

The invention relates to molding machines.

In the operation of sand projectors which -are movably supported by a pair of arms or jibs, as exemplified in Patent No. 1,309,833 dated July 15, 1919 and Reissue Patent No. 15.292 dated February 28, 1922, it has been found that where the iiasks are provided with retaining bars of unusual thickness, the sand is not packed as densely as desired under thebars, because the sand is delivered vertically into the flask.

The object of the present invention is to overcome this objection and to provide a sand projector of the aforesaid type in which provision is made for a slight angling of the line of delivery of the sand when it is necessary. in order to pack the sand under Wide retaining bars of flasks. Other objectsofthe invention will appear from the specification.

The invention 'consists in the several novel features hereinafter set. forth and more par ticularly defined by claims at the conclusion hereof. y Incthe drawings: Fig. 1 is a side elevation machine embodying the invention, par! s beingshown in section. Fig. 2 is a perspective of the bracket and hanger for support-` ing the projector carrying arm. Fig. 3 is a transverse section on line of Fig. 1. Fig.i 4 is a longitudinal section through the projector and its supporting arm. Fig. 5 isa section on line 5--5 of Fig. 4. Fig. 6 a transverse section showilig the geen ing for driving'the feed belt from the projector shaft.

The machine illustrated comprises a supporting standard 35, a iib or :frm 36nivoted to the standard to swing horizontally` an I bythe outer end ofthe Ilib 36 so as to swing horizontally relatively thereto., a sand pro yecto. supported at the outer end of arm 37 und includingl a casing 38. and a rotor 39 provided with a pro]ectorand shear blade arm (or jib '37 which is pivotally sustained.

40, a shaft 41, to which the rotor is secured, extending through arm 37 and connected to electric motor 42 which is movable Awith said arm, a vibratory conveyor. chute 43 containing a. riddle 44 and mounted to swing with jib 3G, a case 45 containing mechanism including a motor (not shown) for vibrating chute 4 3, and an endless belt 46.for feeding sand from the conveyor 43 to the casing 38 of the projector, carried by a drive pulley 47 andan idle-r pulley 48, both mounted to move horizontally with yarm 87. The mechanism for. vibrating the chute 43 and the gearing-for-driving pulley 47 may be of the construction set forth in Patent No. 1,408,493, dated March 7, 1922 to which reference may be made for a more detailed description thereof. The projector shaft 41 extends through the tubular arm 37 and a housing 49 which is fixedly securedto the tube forming the arm 37 and to the motor 42 which lis secured to the inner end of said housing'. The pulley 47 for driving the sand feeding belt 46 is driven by gearing comprising a pinion 51 in housing 49 and fixed to shaft 41; a gear 52 on a transverse shaft a. pinion 54 on shaft 53; an idler 55 meshing with pinion 54 and with ,a gear 56- fixed to thc hub of drive-pulley 47. Pinion 54 and gears 55 and 56 are enclosed in a' suitable casing 57. Shaft 58 for pulley 47 is mounted in case 57 and an arm 59 fixed to one side of housingV 49. An upwardly flared guide-chute 60l is supported over the inner end of belt 46 to direct the sondfrom the conveyor-chute 43 onto belt. 4G .in'a'll positions of the arm 37. Chute G0 is secured to guide-bars 70 which are -disposed over belt 46 and are supported by rods 71 which are secr ed to lugs 72 ou hanger G2 and rod 73 which arefsu'itably secured to arm 37. '1 p The connection between the arm 37 and liib'fi commisesV a hanger r@shaving a seat 62 in ewhich tubular arm 37fis rigidly securedby; Lbolts G3: a stud 64 disposed above thcnrm and-extending longitudinally of said Aarm and through hanger62'l so 'that the hanger will bc pivotally sustained from the stud; a bracket 65'rigid with stud 64`and bowed around arm 37 and extending under the housing 49; and a pintle 66 which is rotatably held "in bearings in a bracketv 67 which fixed to the outer end of jib 36,. Thejih 36 andarm 87 and the pivotal con# vnection between pintle 66 andbearingbracket 67 exemplify a connection which permits the projector, motor and sand-conveyor carried thereby, to be swung horizontally so the projector will sling sand into ,projected vertically downward.

In the iilling of flasks with wide retaining-bars, it is desirable to slightly angle the line of delivery to project the Wads and pack the sand under the bars or other iindercut spaces. The operator' can rock the arm 37 around the horizontal axis of stud 64 which is parallel with the axis of the arm 37, and sliift'aini 37, the projector casing, motor 42. housing 40, belt 46 and chiite 60, all of which are mounted on said arm, in unison siitiiciently to cause the sand to be projected under the retaining-bars in the flask. This-rockingot the projector is accomplished by grasping and shiftingthe handles 61, on the projector-casing. Vlien the handles are released, the projector 'and arm 37 will move by gravity'to their normal position under stiid 64. On account of the preponderance of weight at one side of the arm, caused by the gearing for drivi ing thefeed-belt 46' and case 57, arm 37 will normally hang slightly to one side of the vertical plane intersecting the axis ot stud 64, and the projector casing is arranged so the wads of sand will be discharged vertically while the arm is so positioned. The sides of chute l(i0 arevli'ared, as at 69, to catch the sand from chute 43 in all oithe positions of arm`3T. The hanger 62, by which the arm 37 is suspended, is disposed outwardly from the pintle 66 and at a point where the load Will be substantially balanced longitudinally to avoid cramping between stud 64 and hanger 62.

The invention excliiplifies a molding inacliine of the projector type in which the projector is mounted so it can be shifted horizontally to sling wads of sand at high speed and in a substantially coiistantu'dii'eetion into all portions of the flasks and in which provision is made for rocking the projector to project the wads of sand at a sufficient angle to pack the sand under wide. retaining bars in the lask or undercut spaces in the flask or patterns therein. A characteristic ot this construction is that the projector is 'movable bodily and horizontally to slingsand into all portions of the'ilask without variation of the angle of delivery and that provision is made for sufliciently angling the,line ot delivery to pack they sand under wide retaining-bars when they are in the flask, to

pack the sand under the bars or in other undercut spaces. Another characteristic is that theprojector is moved bodily and horizontally tosling sand in a substantially constant, vertical or angular direction, so the operator Canmore the projector lengthwise of the bars in tliejlask to direct 4the projector for angular delivery whenever occa-- sion therefor arises.

The invention is not to be understood as restricted to the details set forth, since these may be modified within the scope ot-the appended claims, without departing from the spirit and scope of the invention.

Having thus described theinvention, lwhat we claim as new and ,desire to secure by Letters Patent, is:

1. In a molding machine, the combination of a sand-projector comprising a rotor and a casing, means to support the projector for horizontal bodily movement to sling sand into all., portions of the flask at a substantially constantan '1,9 of delivery, means for feeding sand to h projector, means for 'driving the projector, and means for suspendinghe projector so it can be rocked laterally when desired. t

2. Ina molding machine, the combination of a sand projector comprising a rotcnc and a casing, means to support the projector for horizontal bodily movement to sling sand into all portions of the ask at a Asubstantially constant angle of delivery, means for feeding sand to the-projector movable with the casing, means for driving the projector,

Another characteristic.

and means for suspending the projector so l it can be rocked laterally when desired.

3. Ina i'noldiiigmachine, the combination of a sand projector comprising a rotor ansi a casing, means to support the projector for horizontal bodily movement to sling sand into all portions of the flask vat a substantially constant angle of delivery, means for feeding sand to the projector, means tor driving the projector, movable with the casing. and means tor suspending the projector so it. can be rocked laterallj'f' ,ivlienidesired 4. In a molding machine, the combination ot a sand projector comprising a rotor and a casing, means to support the projector for horizontal bodily movement to sling sand into all portions of thel flask at a substans tially constant angle of delivery, means for feeding sand to the projector movable with` f said casing. means for driving the projector also movable with the casing, and means For suspending the projector so it can be rocked laterally when desired.

5. In a molding niachineythe combination of a sand projector comprising a driven jibtofswing horizontally and. supporting at its free end the projector, means for feeding' sand to the projector, `and aronneetiony 'ro-r 'pivotally 'supporting lthe arm to permit the i' projector to be shifted toincline the angie l 6. Ina molding maclnne|tl1e of ldelivery when desired7 v y, combination of va sand projector comprising a rotor and "a casing, a j ibI pivoed to swinghorizontally,-

an arlnjpivoted .to the free end ofthe jib to swing horizontally and supporting at its free .end the projector, driving mechanism for.` the rotor movable with theI arm, means ,tor

feeding sand to the projector,and a connection for pivotally supporting thearmlo permit the projector to be shifted to incline the angle of delivery -when ldesired.

7. In a molding machine, the combimition of a sand projector comprising a rotor and a casing, a jib pivoted to swing. horizontally, an arm pivoted to the free 'end of the jin to swing horizontally and supporting at its free end the projector, driving mechanism for the rotor movable with the arm, means for feeding sand to the projector movable with the arm, and a connection for pivotally supporting the arm to permit the projector to be shifted to incline the angle of delivery when desired.

8. In amolding machine, the combination of a sand-projector comprising a' rotor and a casing, an arm pivoted to move horizontally and supporting at its free end the pro` jector, driving mechanism for the rotor, means for feeding sand to the projector, and a connection which permits the arm to swing bodily around to vary the angle of delivery.

9. In a molding machine, the combination of a sand projector comprisingr a rotor and a casing, an arm pivoted to move horizontally and supporting at its free end the projector, driving mechanism for the rotor movable with -the arm, means for feeding sand to the projector, and 'a connection which permits the arm to swing bodily to vary the angle of delivery.

10. In a`molding machine, the combination of a sand projector comprising a rotor and a casing, an arm pivoted to move horizontally and supporting at its free end the projector, driving mechanism for the rotor movable with the arm, means yfor feeding sand to the projector movable with the arm, and a connection which permits thej arm to swing bodily to vary the angle of delivery.

11. In a molding machine, the combination of a sand projector comprising a rotor and a casin an arm pivoted to move horizontally an `supporting at its free end the projector, driving 'mechanism'for the rotor, means for feeding sand to the projector and a suspension connection for the' arm which permits it toswmg bodily' aroundA an axis substantially 4aligned with thefarm.

`ll. In a molding machine, the combina-V tion of a sand projector'comprising a rotor and a casing,.an arm pivoted to move horizontally and supporting a; its free end the projector, driving mechanism for the rotor movable-with the arm, means iforfeeding' sand to the projector, and asnspension connection for thev arm which permits -ilr to `aligned with the arm. 'i

,lit-In a molding machine, tionof a sand projet-tor eoniprif-'inga rotor and a easing, an arm pivolefl to nieve horizontally and supporting at its'v freefend the .projector` driving mechanism for the `rotor swing bodilv yaround an axis substantiallyY j, movable with the arm, nieans for feeding Sand to the projdctor'movable with the arm, and a suspension ronncetion for the arm which permits it to swinet bodily around an axis substantially aligned3 with the arm.

lll. In a molding machine, the combination of a bracket pivoted to swing horizontally, a horizontally extending arm pivotcd to the bracket, so as to swing laterally therewith and tof'be capable of transverse bodily pivotal movement, and a sand projector movable with said arm and comprising a rotor and a casing.

15. In a molding machine, the combina" tion of a jib pivoted to swing horizontally, a bracket pivoted to sivinghorizontally in the outer end of the jib,l an arm pivotally hung from the bracket so as to swing laterally therewith and to be capable of transverse bodily movement, and a sand projector mounted on said arm comprising a rotor and a casing,

16. In a molding machine, the combinat-ion of* a bracket pivoted to swing horizon` tally, a horizontally extending arm pivot.- ally hung from the bracket so as to swing laterally therewith and to be capable of transverse bodily pivotal movement, a projector mounted on the arm and comprising a rotor and a casing and sand-feeding meehanisrn mounted on the. arm.

17. In a molding machine, the combination of a bracket pivoted to swing horizontally, a horizontally extending arm pivotal'ly hung from the bracket so as to move laterally therewith and capable of transverse bodilyr pivotal movement, a projector mounted on the arm and comprising a rotor and a casing, sand-feeding mechanism mounted on the arm, and a motor for driving the projector movable with the arm.

18. In a molding machine, the combination of a bracket pivoted to swing horizonthe combinasupporting connection betxveen the'bracket and the arm disposed intermediate the projector and the motor.

20. In 'a molding machine, the combination of a bracketpivoted to swing;r horizontally, an arm, a projector at one end of and movable with the arm` a motor for driving' the projector at the other end of and movable i'vith the arm, a sand-feeding belt and gearing for driving it from the motor mounted on and movable with the arm, and

meme@y a pivotal supporting connectionbetween the bracket and the arm4 disposed intermediate the projector and the motor. f

21. In a molding machine, the combination of a jib pivoted to swing horizontally, a bracket4 pivoted to swing horizontally in the outer end of the jib, an arm, a project-or at one end of and movable in all directions With the-arm, a motor for driving v-the projector at the other end of and movable in all directions with the arm, a sand-feeding belt and gearing-for driving it from the motor mounted on and movable in all directions with the arm, and a pivotalsupporting connection between the bracket and the arm disposed intermediate the projector and the motor.

Sivned at Chicago, Illinois this 17th day November, 1922.

ELMER O. BEARDSLEY.

WALTER F. PIPER.` 

